https://arstechnica.com/gadgets/2017/09/amazon-now-has-a-small-army-of-alexa-powered-echo-devices/

Amazon held an event today in Seattle and announced a pair of new Echo home speakers: the revamped $99 Echo and the $150 Echo Plus. The new Echo is the latest version of the company's Alexa-powered home speaker, while the Echo Plus houses Amazon's virtual assistant in addition to being a smart home hub for IoT devices.